Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes
International audience We present results of studies of in situ cosmogenic 14C in several ice samples from the Vostok and Taylor Dome cores, spanning the time intervals of 20 and 11 k.y.B.P., respectively. The results are in variance with our findings for the Greenland Ice Sheet Project 2 (GISP 2) s...
Published in: | Journal of Geophysical Research: Atmospheres |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-03110105 https://hal.science/hal-03110105/document https://hal.science/hal-03110105/file/2001JD900086.pdf https://doi.org/10.1029/2001JD900086 |
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ftuniversailles:oai:HAL:hal-03110105v1 2024-04-28T08:01:45+00:00 Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes Lal, D. Jull, A. Donahue, D. Burr, G. Deck, B. Jouzel, J. Steig, E. Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) University of Arizona Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Department of Earth and Environmental Science Philadelphia University of Pennsylvania 2001 https://hal.science/hal-03110105 https://hal.science/hal-03110105/document https://hal.science/hal-03110105/file/2001JD900086.pdf https://doi.org/10.1029/2001JD900086 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JD900086 hal-03110105 https://hal.science/hal-03110105 https://hal.science/hal-03110105/document https://hal.science/hal-03110105/file/2001JD900086.pdf doi:10.1029/2001JD900086 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03110105 Journal of Geophysical Research: Atmospheres, 2001, 106 (D23), pp.31933-31941. ⟨10.1029/2001JD900086⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2001 ftuniversailles https://doi.org/10.1029/2001JD900086 2024-04-04T17:35:12Z International audience We present results of studies of in situ cosmogenic 14C in several ice samples from the Vostok and Taylor Dome cores, spanning the time intervals of 20 and 11 k.y.B.P., respectively. The results are in variance with our findings for the Greenland Ice Sheet Project 2 (GISP 2) samples, where near quantitative 14C retention was observed. The partitioning of 14C in the CO and CO2 phases is, however, quite similar in the GISP and two Antarctic ice samples. Noting that most of the in situ 14C is produced in the ice during its accumulation to thicknesses of up to-10 m, we interpret the observed 14C deficiencies in Antarctic ice samples as due to grain metamorphism (recrystallization and sublimation or evaporation caused by wind ventilation). Simplified models for wind ventilation exhibit an interesting feature of the firnification processes; they differently affect the concentrations of in situ 14C and of the cosmogenic nuclides 10Be and 36C1 scavenged from the atmosphere in the accumulating firn. By studying the concentrations of in situ cosmogenic 14C and the atmospheric cosmogenic nuclides in the same ice samples, one can hope to obtain fairly realistic models of the chemical impacts of firnification processes: specifically, relationships between precipitation and accumulation and the main processes contributing to modifications in the nuclide concentrations. Article in Journal/Newspaper Antarc* Antarctic GISP Greenland Greenland Ice Sheet Project Ice Sheet Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Journal of Geophysical Research: Atmospheres 106 D23 31933 31941 |
institution |
Open Polar |
collection |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
op_collection_id |
ftuniversailles |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Lal, D. Jull, A. Donahue, D. Burr, G. Deck, B. Jouzel, J. Steig, E. Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience We present results of studies of in situ cosmogenic 14C in several ice samples from the Vostok and Taylor Dome cores, spanning the time intervals of 20 and 11 k.y.B.P., respectively. The results are in variance with our findings for the Greenland Ice Sheet Project 2 (GISP 2) samples, where near quantitative 14C retention was observed. The partitioning of 14C in the CO and CO2 phases is, however, quite similar in the GISP and two Antarctic ice samples. Noting that most of the in situ 14C is produced in the ice during its accumulation to thicknesses of up to-10 m, we interpret the observed 14C deficiencies in Antarctic ice samples as due to grain metamorphism (recrystallization and sublimation or evaporation caused by wind ventilation). Simplified models for wind ventilation exhibit an interesting feature of the firnification processes; they differently affect the concentrations of in situ 14C and of the cosmogenic nuclides 10Be and 36C1 scavenged from the atmosphere in the accumulating firn. By studying the concentrations of in situ cosmogenic 14C and the atmospheric cosmogenic nuclides in the same ice samples, one can hope to obtain fairly realistic models of the chemical impacts of firnification processes: specifically, relationships between precipitation and accumulation and the main processes contributing to modifications in the nuclide concentrations. |
author2 |
Scripps Institution of Oceanography (SIO - UC San Diego) University of California San Diego (UC San Diego) University of California (UC)-University of California (UC) University of Arizona Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Department of Earth and Environmental Science Philadelphia University of Pennsylvania |
format |
Article in Journal/Newspaper |
author |
Lal, D. Jull, A. Donahue, D. Burr, G. Deck, B. Jouzel, J. Steig, E. |
author_facet |
Lal, D. Jull, A. Donahue, D. Burr, G. Deck, B. Jouzel, J. Steig, E. |
author_sort |
Lal, D. |
title |
Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
title_short |
Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
title_full |
Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
title_fullStr |
Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
title_full_unstemmed |
Record of cosmogenic in situ produced 14 C in Vostok and Taylor Dome ice samples: Implications for strong role of wind ventilation processes |
title_sort |
record of cosmogenic in situ produced 14 c in vostok and taylor dome ice samples: implications for strong role of wind ventilation processes |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.science/hal-03110105 https://hal.science/hal-03110105/document https://hal.science/hal-03110105/file/2001JD900086.pdf https://doi.org/10.1029/2001JD900086 |
genre |
Antarc* Antarctic GISP Greenland Greenland Ice Sheet Project Ice Sheet |
genre_facet |
Antarc* Antarctic GISP Greenland Greenland Ice Sheet Project Ice Sheet |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03110105 Journal of Geophysical Research: Atmospheres, 2001, 106 (D23), pp.31933-31941. ⟨10.1029/2001JD900086⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2001JD900086 hal-03110105 https://hal.science/hal-03110105 https://hal.science/hal-03110105/document https://hal.science/hal-03110105/file/2001JD900086.pdf doi:10.1029/2001JD900086 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2001JD900086 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
106 |
container_issue |
D23 |
container_start_page |
31933 |
op_container_end_page |
31941 |
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